package com.common.result.demo.config;

import com.common.result.demo.domain.CommonResult;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * Created by zhanghy on 2019-09-19
 * description
 */
@EnableWebMvc
@Configuration
public class UnifiedReturnConfig {

    @RestControllerAdvice("com.common.result.demo.controller")
    static class CommonResultResponseAdvice implements ResponseBodyAdvice<Object> {
        @Override
        public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
            return true;
        }

        @Override
        public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType,
                                      Class<? extends HttpMessageConverter<?>> aClass,
                                      ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
            if (o instanceof CommonResult) {
                return o;
            }

            return new CommonResult<Object>(o);
        }
    }
}
